As the summer swelters on, skyscrapers and apartments around the city will be cranking up the air conditioning and pushing the city’s power grid to the limit.
An ice-cooling system in the Credit Suisse offices at the historic Metropolitan Life tower in Manhattan is as good for the environment as taking 223 cars off the streets or planting 1.9 million acres of trees to absorb the carbon dioxide caused by electrical usage for one year.
Such a reduction in pollution is valuable in a city where the majority of emissions come from the operation of buildings. State officials say there are at least 3,000 ice-cooling systems worldwide.
Once we get serious about saving energy, we’ll find all kinds of ways to be more efficient. In this case, cheaper electricity is used at night to make ice to cool the building during the day. Here’s another
According to Nature, a European-funded project has be launched to store gigawatts of electricity created from wind into the refrigerated warehouses normally used to store food. As the production of wind energy is variable every day, it cannot be easily accommodated on the electricity grid. So the “Night Wind” project wants to store wind energy produced at night in refrigerated warehouses and to release this energy during daytime peak hours. The first tests will be done in the Netherlands this year. And as the cold stores exist already, practically no extra cost should be needed to store as much as 50,000 megawatt-hours of energy.